CN1909961A - 用于传质应用的陶瓷填充件 - Google Patents
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Abstract
一种陶瓷填充件(10),其具有一个基本上圆柱形的结构(12),该结构(12)在定义长度(L)的方向上具有对称面,垂直于长度的最大尺寸(D)定义为该填充件的直径。该填充件具有多个内部隔片(16),它们形成了通过该填充件的多个通道(18),该填充件具有较大的敞开面面积。
Description
发明背景
发明领域
本发明涉及填充件。本发明具体涉及通常被称为“不规则”或“堆积的”填充类型的填充件,具体涉及具有多个用来促进流体流动的贯穿通道的填充件,本文将对其进行具体描述。
本领域讨论
不规则或堆积的填充件用来填充发生传质或传热过程的塔式装置。一个特别重要的应用是在传质应用中使用这类陶瓷件,诸如从流过塔的废气中除去二氧化硫。使其效率最大化的一个重要因素是将塔顶与塔底的压差(术语称为“压降”)维持得尽可能低。为了确保这一点,填充件的流阻应该尽可能小。非常松散结构的结构可以促进流阻的减小。但是,流阻减少方面的益处通常会被两种流体相通过填充件之间进行传质的效率的损失而抵消。另外,松散结构往往会导致塔内填充件相互套入在一起,使得一个填充件的一部分透入到第二填充件的空间内。因此,重要的是填充件的设计要减少这种填充件相互套入在一起的趋势。
另一种应用是在热量回收操作中的应用,在该操作中要求为流经反应器的热流体提供最为有效的接触。
可以通过挤出法或干压法制造陶瓷填充件,使其沿一个轴向的横截面基本上均匀一致,使这种填充件具有一个对称轴。本领域曾描述过几种从非常简单到复杂的形状。所有形状基本上呈圆柱体状,不同之处主要是圆柱体的内部结构。最简单的结构就是基本圆柱体,内部无任何结构。这类结构常称之为腊希(Raschig)圈,已经有许多年的历史。而具有内部结构的车轮式(wagon-wheel)形状在美国专利3907710和4510263中有描述。还提出的有其它盘旋形的,诸如美国专利5747143中所描述的。更为复杂的结构在美国设计专利455,029和美国专利6,007,915、6,387,534和6,699,562中有描述。通常,所用结构的最大尺寸约为8厘米或小于8厘米。该结构的敞开面面积通常约为25%或小于25%。
本发明提供一种新颖改进的填充件,以及使用该填充件克服上述问题和其它问题的方法。
发明简述
依据一个方面,提供一种陶瓷填充件。该陶瓷填充件包括基本上为圆柱形的结构,它具有长度和与该长度垂直的定义为该填充件直径的最大尺寸。该填充件具有多个内部隔片,这些隔片互相相交形成多个通道。该填充件具有第一面和第二面,各面的敞开面面积约为50-80%。
依据另一个方面,提供一种陶瓷填充件。该填充件包括基本上为圆柱形的结构,它具有长度和与该长度垂直的定义为该填充件直径的最大尺寸。直径至少为10厘米。多个内部隔片互相相交,形成多个通过该填充件的通道,隔片的厚度为0.12至0.8厘米。
本领域技术人员通过阅读下面的说明书和浏览附图,可以很容易理解本发明的优点。
附图简述
本发明的形式可以为各种不同的部件和部件的排列,并可以为各种不同的步骤和步骤的排列。附图只是为了说明优选的实施方式的目的,不应理解为对发明进行限制。
图1是依据本发明的填充件的俯视图;
图2是图1所示填充件的侧视图;
图3是图1所示填充件的透视图;
图4是在相同的传质效率下,由本发明填充件形成的床与四种常规的填充件形成的床相比,由计算机生成的预测压降损失的图;
图5是本发明的填充件与四种常规填充件相比,所形成的床的相对效率的图。
详细描述
参考图1,陶瓷填充件10包括一个外围容纳结构12,其构成了内部空间14。多个隔肋或隔片16将内部空间14分隔成多个通道或通路18。
容纳结构12基本上是圆柱形的,应理解为包括完善的圆柱形和圆柱体稍呈扁平状从而产生椭圆形截面的形状以及规则和不规则的至少有五个边的多边形。图1中的容纳结构12是圆柱形的,具有光滑的外表面19,但是可以设想它可能具有脊形或其它形状的外表面。
在本发明的叙述中,术语“隔片”(复数“多个隔片”)用来描述将圆柱形容纳结构的一个内部部分与另一个内部部分和/或另一个隔片相连的结构件。因此,隔片包括长度等于或小于填充件直径或最大尺寸的结构。在说明性的实施方式中,各隔片16形成以其第一端和第二端与容纳结构12相连的弦。
再参考图2,填充件10具有至少一个对称面S,该对称面S与通过旋转中心轴R的长度L平行。此说明性实施方式中显示了三个对称面S1、S2和S3。旋转中心轴表示该填充件可绕其中心轴旋转360/(对称面数)的角度成为相同的构象。因此对于图1,该角度为120°。
图1所示的通道或通路18一般形状相同。具体地,这些仅由隔片形成的通道具有尺寸相同的三角形状,而那些部分也由容纳结构12构成的通道的形状能适应容纳结构的弯曲形状。还可以设想一些通路比其它通路大,为的是增大通过填充件的流量。例如,通过将两个或更多个三角形通路组合可以形成较大的通路。
图1-3所示的填充件10可具有沿旋转轴R的长度L和垂直于旋转轴的最大尺寸D,该最大尺寸定义为填充件的直径。填充件的横截面沿着该填充件的长度方向。D∶L的比例约为1至15,在一个实施方式中,为2.7至6,而在另一个实施方式中,约为4.0至6.0。在附图中,D∶L的比例约为4.6。当结构用挤出法制造时,对称轴R可以在结构挤出的方向上。
在一个实施方式中,填充件的直径D至少为10厘米,在另一个实施方式中,D至少为12厘米。填充件的直径最多约为20厘米,更佳地,小于约16厘米。在一个具体的实施方式中,直径D约为14厘米。若直径D小于约10厘米,则通过床的压降会提高,除非隔片和/或外围结构的厚度也相应地减少。但是,隔片厚度的最小值有一个限度,才能够通过挤出工艺来进行制造。
填充件越大,使通过填充件床的压降越低。但是,常规填充件尺寸的增加会导致床的效率下降。出乎意料地发现,通过仔细控制填充件的占据面面积,可以将填充件的性质如压降和相对效率都维持在合乎要求的范围内,即使是对于那些尺寸较大的填充件也是如此。如图2所示,该填充件分别具有上部和下部暴露面20、22,这两个暴露面一般垂直于长度L延伸。“占据面面积(face area)”定义为由填充件占据的暴露面的面积,表示为表面总面积的百分数。对于图1中的实施方式,总面积为(D/2)2。占据面面积和从100%总面积中减去占据面面积后得到的“敞开面面积(open face area)”影响着填充件的两个重要参数,即通过填充件床的压降和该床的效率。效率是由填充件回收的传质速率(或热能)的量度,可以表示为对比的填充件的效率之比。通过床的压降可以通过测定相同传质效率下的压降来进行比较。
敞开面面积至少约为40%,最高可达约80%或更高。在一个实施方式中,敞开面面积至少为45%,在另一个实施方式中,至少为50%,而在另一个实施方式中,至少约为55%。在一个实施方式中,敞开面面积最高为70%,在另一个实施方式中,最高为65%,而在另一个实施方式中,最高为60%。在一个具体的实施方式中,敞开面面积约为55%。若敞开面面积在此范围内,已经发现填充件不亚于相同尺寸的商品填充件而比尺寸小许多的填充件,例如最大尺寸只有约3/5的常规鞍形(saddle-shaped)填充件运行得更好。
若在挤出工艺中形成,会导致所形成的填充件的占据面面积略有不同,在填充件床中的填充件的敞开面面积是平均值。
要知道,占据面面积取决于隔片16的宽度W1和隔片的数目。已经发现,如果隔片太窄,填充件往往会在床中被压碎。例如,对于约14厘米的陶瓷填充件来说,隔片的宽度W1至少为0.12厘米,在一个实施方式中,至少为0.2厘米,在一个具体的实施方式中,约为0.3厘米。隔片宽度W1最高可达约0.8厘米,在一个实施方式中,小于约0.5厘米。外围壁10的宽度W2至少为0.12厘米,在一个实施方式中,至少为0.2厘米,在一个具体的实施方式中,约为0.3厘米。壁厚W2最多约为1.4厘米,在一个实施方式中,小于约1厘米。
隔片宽度W1对直径D的比例约为0.01至0.03。在一个实施方式中,W1/D约为0.015-0.027。
在一个实施方式中,如图1所示,有九个隔片,每三个一组排列,每一组与其它各组的角度为120℃。但是,要意识到,根据填充件的尺寸,可以采用更多或更少数目的隔片。隔片在交叉点24互相相交。较佳地,两个相邻的交叉点24之间的距离小于约4厘米,更佳地,约为3.0-3.5厘米。
填充件的长度L可以约为0.4厘米至10厘米。在一个实施方式中,L为1至6厘米。在一个具体的实施方式中,L约为3厘米。
陶瓷件10可由任何合适的陶瓷材料形成,这些陶瓷材料诸如天然或人造粘土、沸石、堇青石、氧化铝、氧化锆、二氧化硅或它们的混合物。将该配方物与粘合剂、挤出助剂、成孔剂、润滑剂等混合,帮助挤出工艺和/或产生目标应用所需的多孔性或表面积。
当这些陶瓷填充件由挤出法或干压法制得时,它们在一个轴向上可具有基本均一的横截面,使得填充件具有径向对称轴或对称面。
填充件10可以用于传质和传热,或作为载体,在其上面沉积催化组分。传质应用包括在第一流体与第二流体之间以一个或多个组分形式的物质传递,所述两种流体可以都是液体,或者一种液体和一种气体。陶瓷填充件为流体相提供润湿的表面,促进组分在流体之间的传递。示例性的传质应用包括从流动的气流中除去二氧化硫之类的气体组分。陶瓷填充件一个重要的传质用途是用在硫酸厂的吸收器中。
例如,填充件10可以填充到塔或柱中,形成填充件床。柱可以是水平取向或直立取向的。
示例性的传热应用涉及从热气流中回收热量。这类应用的一个例子是工厂用的换热器,这种工厂的功能是燃烧废气流中任何可燃烧的物质。这类换热器对于有效利用排放废气流中的热值,以便加热进入的需要进行处理的废气,进而降低燃烧可燃性物质所需燃料的成本是极为重要的。
然而,此填充件可有利地用于各种用途,此时表面积是一个重要因素,它决定了该填充件在完成其指定任务中的效率。
不旨在限制本发明的范围,以下实施例论证了陶瓷填充件的有效性。
实施例
对于由依据图1的陶瓷填充件形成的床进行了理论计算。该填充件的直径D为14厘米,壁厚W2为0.6厘米,隔片宽度W1为0.3厘米,长度L为3厘米。
图4表示了本发明填充件床相对于由最大尺寸为7.6厘米的鞍形填充件形成的相应床,理论确定的相对压降。确定了相同传质效率的床的压降,鞍形填充件的相对压降指定为1。还比较了由标记为产品1、2和3的商品形成的三种床的结果。产品1是波形(wave-shaped)填充件,它具有三个孔,总尺寸约为5厘米×7.6厘米×20.3厘米。产品2是改良的鞍形填充件,它具有通孔,以商品名Cecebe HPTM Porcelain Saddle Packing从Noram-Cecebe,Vancouver,BC Canada购得。产品3为具有多层结构的填充件,可以FlexeramicTM结构化的填充体系从Koch Knight LLC,East Canton,OH购得。
鞍形和商品填充件床的压降损失比由图1所示填充件形成的床的压降损失都要高,表明本发明的填充件在用于维持通过床的流量方面的优越性。
一般估计的是,提供较大流量的填充件会伴随效率损失。但是,图5中所示的结果表明,与鞍形和其它三种商品相比,本发明的填充件具有更佳的传热效率。
Claims (23)
1.一种陶瓷填充件(10),其包括一个基本上圆柱形的结构(12),所述圆柱形结构(12)具有长度(L)和垂直于长度方向的最大尺寸(D),该最大尺寸(D)定义为所述填充件的直径,所述填充件具有多个内部隔片(16),这些内部隔片(16)相交形成多个通道(14),所述填充件形成第一面和第二面(20,22),其特征在于:各个面(20,22)的敞开面面积都为50-80%。
2.如权利要求1所述的陶瓷填充件,其特征在于,敞开面面积小于约65%。
3.如权利要求2所述的陶瓷填充件,其特征在于,敞开面面积小于约60%。
4.如权利要求1至4中任一项所述的陶瓷填充件,其特征在于,所述基本上圆柱形的结构包括在定义填充件长度的方向上的对称面(S1、S2、S3)。
5.如权利要求1至4中任一项所述的陶瓷填充件,其特征在于,直径与长度之比为2.7至6.0。
6.如权利要求5所述的陶瓷填充件,其特征在于,直径与长度之比为4.0至6.0。
7.如权利要求6所述的陶瓷填充件,其特征在于,直径与长度之比4.5至5.0。
8.如权利要求1至7中任一项所述的陶瓷填充件,其特征在于,所述陶瓷填充件包括至少二十个通道。
9.如权利要求1至9中任一项所述的陶瓷填充件,其特征在于,至少一部分通道具有三角形横截面。
10.如权利要求1至9中任一项所述的陶瓷填充件,其特征在于,所述最大尺寸至少为10厘米。
11.如权利要求10所述的陶瓷填充件,其特征在于,所述最大尺寸为12-20厘米。
12.如权利要求1至11中任一项所述的陶瓷填充件,其特征在于,所述隔片在与第一面平行方向上的厚度(W1)至少为0.12厘米。
13.如权利要求12所述的陶瓷填充件,其特征在于,所述隔片厚度为0.2-0.5厘米。
14.如权利要求12或13所述的陶瓷填充件,其特征在于,所述隔片厚度与直径之比约为0.01至0.03。
15.如权利要求1至14中任一项所述的陶瓷填充件,其特征在于,所述结构在与第一平面平行方向上的厚度(W2)至少为0.12厘米。
16.如权利要求1至15中任一项所述的陶瓷填充件,其特征在于,陶瓷填充件中的所有隔片包括第一端和第二端,所述隔片于邻近其第一端和第二端处与圆柱形结构连接。
17.如权利要求1至16中任一项所述的陶瓷填充件,其特征在于,所述陶瓷由选自以下的材料制成:天然粘土、人造粘土、氧化铝、沸石、堇青石、氧化锆、二氧化硅和它们的混合物。
18.一种无规排列的陶瓷填充件(10)的床,各填充件包括基本上圆柱形的结构(12),所述圆柱形结构(12)具有长度(L)和垂直于长度方向的最大尺寸(D),该最大尺寸(D)定义为所述填充件的直径,所述填充件具有多个内部隔片(16),这些内部隔片(16)相交形成多个通道(14),所述填充件构成第一面和第二面(20,22),其特征在于:面(20,22)的平均敞开面面积都为50-80%。
19.一种用来进行以下操作中至少一种的方法:向流体流传递热量或从流体流传走热量和在流体相之间传质,该方法的特征是:
使所述流体流流过包括如权利要求1至17中任一项所述的陶瓷填充件的床,该填充件至少进行以下操作中的一种:传递热量和提供流体相之间能在此进行传质的表面。
20.如权利要求19所述的方法,其特征在于,传质包括在流体相之间传递气态硫化合物。
21.一种陶瓷填充件(10),其特征在于:
基本上圆柱形的结构(12),其具有长度(L)和垂直于长度方向的最大尺寸(D),该最大尺寸(D)定义为所述填充件的直径,所述直径至少为10厘米;和
多个内部隔片(16),这些内部隔片(16)相交形成通过填充件的多个通道(14),隔片的厚度为0.12至0.8厘米。
22.如权利要求21所述的陶瓷填充件,其特征在于,所述填充件形成第一面和第二面(20,22),面(20,22)的敞开面面积都约为40-80%。
23.如权利要求21所述的陶瓷填充件,其特征在于,所述填充件形成第一面和第二面(20,22),面(20,22)的敞开面面积都至少为50%。
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US10/761,559 | 2004-01-21 | ||
US10/761,559 US20040166284A1 (en) | 2002-02-28 | 2004-01-21 | Ceramic packing element for mass transfer applications |
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CN1909961A true CN1909961A (zh) | 2007-02-07 |
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CNA2005800029193A Pending CN1909961A (zh) | 2004-01-21 | 2005-01-21 | 用于传质应用的陶瓷填充件 |
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US (1) | US20040166284A1 (zh) |
EP (1) | EP1713576A1 (zh) |
JP (1) | JP2007520338A (zh) |
KR (1) | KR20060128941A (zh) |
CN (1) | CN1909961A (zh) |
AU (1) | AU2005209254A1 (zh) |
BR (1) | BRPI0507001A (zh) |
CA (1) | CA2552998A1 (zh) |
MA (1) | MA28344A1 (zh) |
MX (1) | MXPA06008237A (zh) |
PL (1) | PL380270A1 (zh) |
TN (1) | TNSN06214A1 (zh) |
WO (1) | WO2005072862A1 (zh) |
ZA (1) | ZA200605837B (zh) |
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CN114225889A (zh) * | 2021-12-17 | 2022-03-25 | 萍乡市天盛化工设备有限公司 | 一种多孔状花环填料结构 |
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US7862013B2 (en) * | 2006-10-19 | 2011-01-04 | Saint-Gobain Ceramics & Plastics, Inc. | Packing element for use in a chemical processing apparatus |
JP2008183501A (ja) * | 2007-01-29 | 2008-08-14 | Anemosu:Kk | 流体混合器 |
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- 2004-01-21 US US10/761,559 patent/US20040166284A1/en not_active Abandoned
-
2005
- 2005-01-21 KR KR1020067014826A patent/KR20060128941A/ko not_active Application Discontinuation
- 2005-01-21 WO PCT/US2005/002025 patent/WO2005072862A1/en active Application Filing
- 2005-01-21 CA CA002552998A patent/CA2552998A1/en not_active Abandoned
- 2005-01-21 MX MXPA06008237A patent/MXPA06008237A/es unknown
- 2005-01-21 AU AU2005209254A patent/AU2005209254A1/en not_active Abandoned
- 2005-01-21 CN CNA2005800029193A patent/CN1909961A/zh active Pending
- 2005-01-21 PL PL380270A patent/PL380270A1/pl not_active Application Discontinuation
- 2005-01-21 EP EP05711815A patent/EP1713576A1/en not_active Withdrawn
- 2005-01-21 BR BRPI0507001-5A patent/BRPI0507001A/pt not_active IP Right Cessation
- 2005-01-21 JP JP2006551319A patent/JP2007520338A/ja active Pending
-
2006
- 2006-07-07 TN TNP2006000214A patent/TNSN06214A1/en unknown
- 2006-07-14 ZA ZA200605837A patent/ZA200605837B/en unknown
- 2006-08-03 MA MA29231A patent/MA28344A1/fr unknown
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114225887A (zh) * | 2021-12-17 | 2022-03-25 | 萍乡市天盛化工设备有限公司 | 一种新型金属花环填料 |
CN114225889A (zh) * | 2021-12-17 | 2022-03-25 | 萍乡市天盛化工设备有限公司 | 一种多孔状花环填料结构 |
CN114225887B (zh) * | 2021-12-17 | 2024-02-06 | 萍乡市天盛化工设备有限公司 | 一种新型金属花环填料 |
CN114225889B (zh) * | 2021-12-17 | 2024-04-02 | 萍乡市天盛化工设备有限公司 | 一种多孔状花环填料结构 |
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ZA200605837B (en) | 2008-04-30 |
AU2005209254A1 (en) | 2005-08-11 |
WO2005072862A1 (en) | 2005-08-11 |
JP2007520338A (ja) | 2007-07-26 |
CA2552998A1 (en) | 2005-08-11 |
US20040166284A1 (en) | 2004-08-26 |
EP1713576A1 (en) | 2006-10-25 |
MXPA06008237A (es) | 2007-01-26 |
MA28344A1 (fr) | 2006-12-01 |
PL380270A1 (pl) | 2007-01-08 |
TNSN06214A1 (en) | 2007-12-03 |
KR20060128941A (ko) | 2006-12-14 |
BRPI0507001A (pt) | 2007-06-05 |
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